powerpc/e500mc: flush L2 on NAP for e500mc

[linux-2.6-omap-h63xx.git] / arch / powerpc / kernel / idle_e500.S

diff --git a/arch/powerpc/kernel/idle_e500.S b/arch/powerpc/kernel/idle_e500.S
index 267adec2491b38f917a93b502ae8f12650447e1b..06304034b3939e63cb619849fc5d80ebd6b07ce4 100644 (file)
--- a/arch/powerpc/kernel/idle_e500.S
+++ b/arch/powerpc/kernel/idle_e500.S
@@ -47,6 +47,15 @@ BEGIN_FTR_SECTION
        mtlr    r0
        lis     r3,HID0_NAP@h
 END_FTR_SECTION_IFSET(CPU_FTR_CAN_NAP)
+BEGIN_FTR_SECTION
+       msync
+       li      r7,L2CSR0_L2FL@l
+       mtspr   SPRN_L2CSR0,r7
+2:
+       mfspr   r7,SPRN_L2CSR0
+       andi.   r4,r7,L2CSR0_L2FL@l
+       bne     2b
+END_FTR_SECTION_IFSET(CPU_FTR_L2CSR|CPU_FTR_CAN_NAP)
 1:
        /* Go to NAP or DOZE now */
        mfspr   r4,SPRN_HID0